The most common and most likely answer to this crossword clue is the 9 letter word COLTSFOOT
I've seen this crossword clue in The Guardian
C
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More clues leading to the result COLTSFOOT
Buddy explains!
The straight part
We know that "Bloomer" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bloomer = coltsfoot.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COLTSFOOT mean?
COLTSFOOT noun- An herbaceous plant, species Tussilago farfara, that grows in Europe and the Middle East.
- Various flowering plants in the genus Petasites native to Europe or Asia.
- Homogyne alpina (alpine coltsfoot or purple colt's-foot).